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Finding the Fourth Proportional to 188,730.25, 283,139.12 and 64,071.25

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Solution

The fourth proportional to 188,730.25, 283,139.12 and 64,071.25 is: 96,121.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,730.25 : 283,139.12 = 64,071.25 : x
  2. Step 2: Convert to fraction form
    188,730.25/283,139.12 = 64,071.25/x
  3. Step 3: Cross multiply
    188,730.25x = 283,139.12 × 64,071.25
  4. Step 4: Simplify right side
    188,730.25x = 18,141,077,021.94
  5. Step 5: Solve for x
    x = 18,141,077,021.94/188,730.25
  6. Step 6: Final answer
    x = 96,121.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.